一.測試拓撲：
??
參考鏈接：
A.Configuring VRF Tables－思科ＭＰＬＳ教程
http://www.doc88.com/p-085712708378.html
B.如何利用VRF在單臺路由器上創建多份路由表
http://net.zdnet.com.cn/files/all-2081627.htm
C.在Cisco路由器上配置VRF-aware IPsec VPN
http://networking.ctocio.com.cn/76/12336576.shtml
二.基本配置：
A.SW1：
①創建VLAN
vlan database?
vlan 11
vlan 12
?exit
②接口劃入VLAN
interface FastEthernet0/1
?switch mode access
?switchport access vlan 11
?no shut
interface FastEthernet0/2
?switch mode access
?switchport access vlan 12
?no shut
③trunk接口配置
interface FastEthernet0/0
?sw trunk encapsulation dot1q?
?switchport mode trunk
?no shut
B.R1：
①創建VRF
ip vrf vd01
?rd 1:1
ip vrf vd02
?rd 2:2
②劃分子接口，并將子接口劃分到vrf中
---處于不同vrf的子接口IP可以相同
interface FastEthernet0/0
?no shut
interface FastEthernet0/0.11
?encapsulation dot1Q 11
?ip vrf forwarding vd01
?ip address 10.1.1.1 255.255.255.0
interface FastEthernet0/0.12
?encapsulation dot1Q 12
?ip vrf forwarding vd02
?ip address 10.1.1.1 255.255.255.0
interface FastEthernet1/0
?no shut
interface FastEthernet1/0.21
?encapsulation dot1Q 21
?ip vrf forwarding vd01
?ip address 202.100.1.1 255.255.255.0
interface FastEthernet1/0.22
?encapsulation dot1Q 22
?ip vrf forwarding vd02
?ip address 202.100.1.1 255.255.255.0
③測試：
1.路由器能ping通VRF的接口地址
R1#ping vrf vd01 10.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
R1#
R1#ping vrf vd02 10.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R1#
R1#ping vrf vd01 202.100.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.100.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R1#ping vrf vd02 202.100.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.100.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
R1#
2.兩個VPC配置相同的地址，都能ping通路由器的子接口地址
?
C.R2：
①創建VRF
ip vrf vd01
?rd 1:1
ip vrf vd02
?rd 2:2
②劃分子接口，并將子接口劃分到vrf中
---處于不同vrf的子接口IP可以相同
interface FastEthernet0/0
?no shut
interface FastEthernet0/0.11
?encapsulation dot1Q 11
?ip vrf forwarding vd01
?ip address 20.1.1.1 255.255.255.0
interface FastEthernet0/0.12
?encapsulation dot1Q 12
?ip vrf forwarding vd02
?ip address 20.1.1.1 255.255.255.0
interface FastEthernet1/0
?no shut
interface FastEthernet1/0.21
?encapsulation dot1Q 21
?ip vrf forwarding vd01
?ip address 202.100.1.2 255.255.255.0
interface FastEthernet1/0.22
?encapsulation dot1Q 22
?ip vrf forwarding vd02
?ip address 202.100.1.2 255.255.255.0
③測試：
R2#ping vrf vd01 202.100.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.100.1.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 20/42/80 ms
R2#ping vrf vd02 202.100.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.100.1.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 36/53/80 ms
R2#
---R2能ping通R2的相連的子接口地址
D.SW2：
①創建VLAN
vlan database?
vlan 11
vlan 12
?exit
②接口劃入VLAN
interface FastEthernet0/1
?switch mode access
?switchport access vlan 11
?no shut
interface FastEthernet0/2
?switch mode access
?switchport access vlan 12
?no shut
③trunk接口配置
interface FastEthernet0/0
?sw trunk encapsulation dot1q?
?switchport mode trunk
?no shut
④測試：
VPC3和VPC4配置相同ip地址能ping通路由器的子接口地址
?
三.VRF靜態路由配置：
A.R1：
ip route vrf vd01 20.1.1.0 255.255.255.0 202.100.1.2
ip route vrf vd02 20.1.1.0 255.255.255.0 202.100.1.2
B.R2：
ip route vrf vd01 10.1.1.0 255.255.255.0 202.100.1.1
ip route vrf vd02 10.1.1.0 255.255.255.0 202.100.1.1
四.效果測試：
VPC1能ping通VPC3，VPC2能ping通VPC4

本文轉自 碧云天 51CTO博客，原文鏈接：http://blog.51cto.com/333234/1107107，如需轉載請自行聯系原作者

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